OK, let's work through this together. We're starting with 693 and we're going to multiply it by 78, which means we add 693 to itself 78 times.
Step 1: 0 + 693 = 693
Step 2: 693 + 693 = 1386
Step 3: 1386 + 693 = 2079
Step 4: 2079 + 693 = 2772
Step 5: 2772 + 693 = 3465
Step 6: 3465 + 693 = 4158
Step 7: 4158 + 693 = 4851
Step 8: 4851 + 693 = 5544
Step 9: 5544 + 693 = 6237
Step 10: 6237 + 693 = 6930
Step 11: 6930 + 693 = 7623
Step 12: 7623 + 693 = 8316
Step 13: 8316 + 693 = 9009
Step 14: 9009 + 693 = 9702
Step 15: 9702 + 693 = 10395
Step 16: 10395 + 693 = 11088
Step 17: 11088 + 693 = 11781
Step 18: 11781 + 693 = 12474
Step 19: 12474 + 693 = 13167
Step 20: 13167 + 693 = 13860
Step 21: 13860 + 693 = 14553
Step 22: 14553 + 693 = 15246
Step 23: 15246 + 693 = 15939
Step 24: 15939 + 693 = 16632
Step 25: 16632 + 693 = 17325
Step 26: 17325 + 693 = 18018
Step 27: 18018 + 693 = 18711
Step 28: 18711 + 693 = 19404
Step 29: 19404 + 693 = 20097
Step 30: 20097 + 693 = 20790
Step 31: 20790 + 693 = 21483
Step 32: 21483 + 693 = 22176
Step 33: 22176 + 693 = 22869
Step 34: 22869 + 693 = 23562
Step 35: 23562 + 693 = 24255
Step 36: 24255 + 693 = 24948
Step 37: 24948 + 693 = 25641
Step 38: 25641 + 693 = 26334
Step 39: 26334 + 693 = 27027
Step 40: 27027 + 693 = 27720
Step 41: 27720 + 693 = 28413
Step 42: 28413 + 693 = 29106
Step 43: 29106 + 693 = 29799
Step 44: 29799 + 693 = 30492
Step 45: 30492 + 693 = 31185
Step 46: 31185 + 693 = 31878
Step 47: 31878 + 693 = 32571
Step 48: 32571 + 693 = 33264
Step 49: 33264 + 693 = 33957
Step 50: 33957 + 693 = 34650
Step 51: 34650 + 693 = 35343
Step 52: 35343 + 693 = 36036
Step 53: 36036 + 693 = 36729
Step 54: 36729 + 693 = 37422
Step 55: 37422 + 693 = 38115
Step 56: 38115 + 693 = 38808
Step 57: 38808 + 693 = 39501
Step 58: 39501 + 693 = 40194
Step 59: 40194 + 693 = 40887
Step 60: 40887 + 693 = 41580
Step 61: 41580 + 693 = 42273
Step 62: 42273 + 693 = 42966
Step 63: 42966 + 693 = 43659
Step 64: 43659 + 693 = 44352
Step 65: 44352 + 693 = 45045
Step 66: 45045 + 693 = 45738
Step 67: 45738 + 693 = 46431
Step 68: 46431 + 693 = 47124
Step 69: 47124 + 693 = 47817
Step 70: 47817 + 693 = 48510
Step 71: 48510 + 693 = 49203
Step 72: 49203 + 693 = 49896
Step 73: 49896 + 693 = 50589
Step 74: 50589 + 693 = 51282
Step 75: 51282 + 693 = 51975
Step 76: 51975 + 693 = 52668
Step 77: 52668 + 693 = 53361
Step 78: 53361 + 693 = 54054

So, 693*78 = 54054